Auto-tune system



FIG. 1 is a lower front face elevational view of an auto-tune system showing my new design;

FIG. 2 is an upper front face elevational view thereof;

FIG. 3 is an lower rear face elevational view thereof;

FIG. 4 is an upper rear face elevational view thereof;

FIG. 5 is an exploded left side elevational view thereof;

FIG. 6 is an exploded right side elevational view thereof;

FIG. 7 is an exploded top plan view thereof;

FIG. 8 is an exploded bottom plan view thereof; and,

FIG. 9 is an exploded isometric view thereof. 

The ornamental design for an auto-tune system, as shown and described. 